<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        ul{
            margin: 0px;
            /* padding: 0px; */
        }
        /* aaa只能给ul使用,给其他元素使用不生效 */
        ul.aaa{
            /* list-style-type: circle; */
            /* list-style-type: disc; */
            /* list-style-type: square; */
            /* list-style-image: url("https://www.runoob.com/try/demo_source/sqpurple.gif"); */
            /* list-style: square url("https://www.runoob.com/try/demo_source/sqpurple.gif"); */
            /* list-style-position: inside; */
            list-style: none;
        }
        ol.bbb{
            /* list-style-type: circle; */
            list-style: none;
        }
    </style>
</head>
<body>
    <div>1111</div>
    <ul class="aaa">
        <li>我是无序列表1</li>
        <li>我是无序列表2</li>
        <li>我是无序列表3</li>
    </ul>
    <div>2222</div>
    <ol class="bbb">
        <li>我是有序列表1</li>
        <li>我是有序列表2</li>
        <li>我是有序列表3</li>
    </ol>
</body>
</html>